Homework

[Philippa]

Please, how do i make my comparison case sensitive?

#program that simulates how websites ensure that everyone has a unique username . 
current_users = ['mary', 'michael', 'john', 'cyril', 'philippa']
new_users = ['mike', 'mary', 'joy', 'philippa', 'peace']

for new_user in new_users:
    if new_user.lower() in current_users.lower():
        print('Username not available')
        print('Please enter a new username')
    else:
        print('Username is available.')